Area is somewhat that is occupied by an object when it is resting on a surface i.e area is the space which is used by the object. Whereas cross-sectional area is an area which we obtain when the same object is cut into two pieces. The area of that perticular cross section is know as cross sectional area.
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Is area and cross-sectional area the same?
The cross-sectional area of a cylinder is equal to the area of a circle if cut parallel to the circular base. The cross-sectional area is the area of a two-dimensional shape that is obtained when a three-dimensional object – such as a cylinder – is sliced perpendicular to some specified axis at a point.
What is called cross-sectional area?
Cross-Sectional Area
When a plane cuts a solid object, an area is projected onto the plane. That plane is then perpendicular to the axis of symmetry. Its projection is known as the cross-sectional area.
What is the difference between area of cross section and diameter?
The cross-sectional area of the wire A is the area of a circle of radius r, or of diameter d = 2r: A=πr2=π(d2)2.
What is the cross-sectional area of a river?
Cross-sectional area (A in the formula) is the product of stream width multiplied by average water depth.
What is cross section in maths?
In geometry and science, a cross section is the non-empty intersection of a solid body in three-dimensional space with a plane, or the analog in higher-dimensional spaces. Cutting an object into slices creates many parallel cross-sections.
What is cross-sectional view?
2 : a view showing what the inside of something looks like after a cut has been made through it. 3 : a small group that includes examples of the different types of people or things in a larger group a cross section of voters.
What is the relationship between diameter and cross-sectional area?
Diameter is length i.e. length of the largest chord of a circle. While cross-section is area. So if an object, e.g wire ( 17 AWG), has a diameter of 1.15mm then it has a cross-section of 1.04 sq mm.
What is V shaped valley?
BSL Geography Glossary – V-shaped Valley – definition
A V-valley is formed by erosion from a river or stream over time. It is called a V-valley as the shape of the valley is the same as the letter “V”.
What is the difference between the long and cross profile of a river?
The average flow velocity of a river increases along its long profile. This makes sense; along the profile, more potential energy is converted to kinetic energy, increasing the velocity. This is only the average velocity however; a cross-section of a river shows that the velocity varies from one side to the other.
What is area of cross-section in maths class 10?
Cross Sectional Area Physics
The area of a two-dimensional shape obtained when a three-dimensional object – such as a cube – is cut perpendicular to any given axis at a point is known as the cross sectional area in physics. A cylinder’s cross-section, for example, is a circle cut parallel to its centre.
What are the different types of sectional views?
6 Types of sectional views
- Full sections.
- Half sections or views.
- Offset sections or views.
- Broken out sections or broken views.
- Revolving sections or view.
- Removed sections.
Is cross section and transverse section the same?
The transverse section is done in a perpendicular alignment whereas the cross section is done not in the preferred direction. The transverse section is done by slicing the object by using the imaging technique whereas cross section is done by cutting the object in slices which makes the objects in the parallel.
How is cable measured in mm2?
In Europe, wire and cable sizes are expressed in cross sectional area in mm2, and also as the number of strands of wires of a diameter expressed in mm. For example, 7/0.2 means 7 strands of wire each 0.2mm diameter. This example has a cross sectional area of 0.22mm2.
What is a cross-sectional diameter?
The size of the smallest circle through which a molecule can pass is called its minimum effective cross-sectional diameter.
Is the Grand Canyon a V shaped valley?
An example of a V-shaped valley is the Grand Canyon in the Southwestern United States. After millions of years of erosion, the Colorado River cut through the rock of the Colorado Plateau and formed a steep-sided canyon V-shaped canyon known today as the Grand Canyon.
What is the difference between gorge and canyon?
A canyon is a deep valley having steep sides, and a gorge is a deep ravine with a river flowing through it or a ravine without the river.
What are rapids in geography?
Rapids are areas of shallow, fast-flowing water in a stream. Rapids tend to form in younger streams, with water flow that is straighter and faster than in older streams. Softer rocks in the streambed erode, or wear away, faster than harder rocks.
What is a slice across a river called?
2. A slice across the river is called what? Cross profile.
Why does the cross profile of a river change?
As the river flows downstream it is joined by tributaries, increasing the volume of water, velocity and therefore its erosive power. This enables it to cut a deeper channel as it flows downstream. Downstream, the channel becomes wider as the gradient becomes more gentle leading to less vertical erosion.
What are the 4 different types of erosion?
Rainfall produces four types of soil erosion: splash erosion, sheet erosion, rill erosion, and gully erosion.
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